PCIE 4.0 X8 to X16 extension cable, 16GBS bi-directional bandwidth. Adopt GEN4 connector with gold plating 15U. Support PCIE 4.0 devices, backward compatible with PCIE 3.0. PCB short design, 4 layers of circuit boards, impedance control 85. Support PCIE card such as network card, solid state drive, capture card. Silver-plated shielded cable, double-layer cable, thickness 2mm, width 25mm. PCIE 4.0 X8 to X16 Extension Cable 180°Flat Angle, Model 816ABZ. PCIE 4.0 X8 to X16 Extension Cable 90°Right Angle, Model 816ACZ.